Casey Way has been haunted by visions of his dead father for the last twenty years, tormented by hazy recollections of his father's murder at the hands of his stepmother. The trauma has left Casey burdened with guilt, which has manifested in debilitating insomnia and violent hallucinations. As the anniversary of his father's murder approaches, his step-sister Mariska takes him back to the scene of the crime: their childhood home, to confront their past and finally get some closure.

Instead, something follows Casey back out into the world, something ugly, violent, familiar. It begins a vicious spiral of insanity as people around him begin disappearing and dying, hiding behind the faces of Casey's loved ones. Somehow tied to his father's murder, Casey begins digging into his fragmented memories for an answer. What he finds instead brings Casey face-to-face with his greatest fears as he struggles to end the nightmares that have haunted all of their lives.